The Wilson Cellular NMO antenna (whip only) requires a standard NMO mount. Most NMO mounts are installed by drilling a hole in the roof of your vehicle. The cable is then routed under the headliner to the cellphone's location. This provides for an excellent ground plane and very solid permanent installation.
 
Product Details
 
Dual-Band & Tri-Mode: 800MHz & 1900MHz Analog and Digital
Compatible with all Cellular, PCS and iDEN providers
Multiple NMO mounting options are available (sold separately)
Metal ground plane required
10 to 15 times more signal than a cell phone used inside vehicle without an external antenna